A mashup does not load and the system displays the SECU0019 issue for an unauthorized or unregistered request.

The mashup uses unregistered parameters. If you manually change a parameter in the mashup snippet, the system produces a 403 error.

• As a best practice, do not change the parameters in the mashup snippet.
• When you create a mashup, enable the passing of dynamic parameters by turning on the Allow passing dynamic parameters option. This option registers mashup parameters for you.
• Alternatively, use a script to re-register the pzIncludeMashupScripts activity and use the parameters that you updated after channel generation.
  For example: See the following sample code:

  <%
  try{
  com.pega.pegarules.priv.context.PegaThread prThread = (com.pega.pegarules.priv.context.PegaThread) tools.getThread();
  java.util.Map<String, String> mashupScriptsMap = new java.util.HashMap<String , String>();
  mashupScriptsMap.put("pyActivity","pzIncludeMashupScripts");
  prThread.registerQueryString(mashupScriptsMap);
  }catch(Exception e){
  oLog.error("Exception while registering the mashup requests.");
  }
  %>